chore: fix

pkg/check/longavailability/longavailability.go

@@ -82,9 +82,9 @@ func (c *Check) Run(ctx context.Context, cluster orchestration.Cluster, o interf
 				continue
 			}
 			c.logger.Infof("download size %d", size)
-			c.metrics.DownloadSize.Set(float64(size))
+			c.metrics.DownloadSize.Add(float64(size))
 			dur := time.Since(start)
-			c.metrics.DownloadDuration.Observe(dur.Seconds())
+			c.metrics.DownloadDuration.Add(dur.Seconds())
 			c.logger.Infof("node %s: downloaded %s successfully in %v", node.Name(), addr, dur)
 			break
 		}

pkg/check/longavailability/metrics.go

@@ -8,8 +8,8 @@ import (
 type metrics struct {
 	DownloadErrors   prometheus.Counter
 	DownloadAttempts prometheus.Counter
-	DownloadDuration prometheus.Histogram
-	DownloadSize     prometheus.Gauge
+	DownloadDuration prometheus.Counter
+	DownloadSize     prometheus.Counter
 }
 
 func newMetrics(subsystem string) metrics {
@@ -28,19 +28,19 @@ func newMetrics(subsystem string) metrics {
 				Name:      "download_errors_count",
 				Help:      "The total number of errors encountered before successful download.",
 			}),
-		DownloadDuration: prometheus.NewHistogram(
-			prometheus.HistogramOpts{
+		DownloadDuration: prometheus.NewCounter(
+			prometheus.CounterOpts{
 				Namespace: m.Namespace,
 				Subsystem: subsystem,
 				Name:      "data_download_duration",
 				Help:      "Data download duration through the /bytes endpoint.",
 			}),
-		DownloadSize: prometheus.NewGauge(
-			prometheus.GaugeOpts{
+		DownloadSize: prometheus.NewCounter(
+			prometheus.CounterOpts{
 				Namespace: m.Namespace,
 				Subsystem: subsystem,
 				Name:      "download_size",
-				Help:      "Amount of data downloaded per download.",
+				Help:      "Amount of data downloaded.",
 			},
 		),
 	}